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Basis of Presentation - Reclassifications to Previously Reported Amounts (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
General and administrative expenses | $ 34,026 | $ 32,787 | $ 69,437 | $ 64,883
As previously reported |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
General and administrative expenses |  | 40,352 |  | 79,082
Reclassifications |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
General and administrative expenses |  | (7,565) |  | (14,199)
Services |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Cost of revenue, exclusive of depreciation and amortization | 85,785 | 74,088 | 169,024 | 145,050
Services | As previously reported |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Cost of revenue, exclusive of depreciation and amortization |  | 65,015 |  | 128,225
Services | Reclassifications |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Cost of revenue, exclusive of depreciation and amortization |  | 9,073 |  | 16,825
Products |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Cost of revenue, exclusive of depreciation and amortization | $ 23,475 | 18,798 | $ 43,603 | 36,427
Products | As previously reported |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Cost of revenue, exclusive of depreciation and amortization |  | 20,306 |  | 39,053
Products | Reclassifications |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Cost of revenue, exclusive of depreciation and amortization |  | $ (1,508) |  | $ (2,626)

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- Definition The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(a),(d)) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + Details
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